Hi. Running the configure script of an old gimp, a line containing the "ac_fn_c_try_run" does not evaluate as true.
This leads a certain variable to be set as true, which makes the gtk's detection test to fail.
The problem is likely related to something in pkg-config's use in configure, as another line that directly invokes pkg-config, also does not evaluate as true, which also ends up setting this variable as true and causes the detection test to fail.
So I am trying to understand what this function does and hence how/why it can fail.
The line is: "if ac_fn_c_try_run "$LINENO"; then :"
I attached the full gtk detection test.
if test "${enable_gtktest+set}" = set; then :
enableval=$enable_gtktest;
else
enable_gtktest=yes
fi
pkg_config_args=gtk+-2.0
for module in . gthread
do
case "$module" in
gthread)
pkg_config_args="$pkg_config_args gthread-2.0"
;;
esac
done
no_gtk=""
# Extract the first word of "pkg-config", so it can be a program name with args.
set dummy pkg-config; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
if ${ac_cv_path_PKG_CONFIG+:} false; then :
$as_echo_n "(cached) " >&6
else
case $PKG_CONFIG in
[\\/]* | ?:[\\/]*)
ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
;;
*)
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
done
done
IFS=$as_save_IFS
test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"
;;
esac
fi
PKG_CONFIG=$ac_cv_path_PKG_CONFIG
if test -n "$PKG_CONFIG"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
$as_echo "$PKG_CONFIG" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
if test x$PKG_CONFIG != xno ; then
if pkg-config --atleast-pkgconfig-version 0.7 ; then
:
else
echo "*** pkg-config too old; version 0.7 or better required."
no_gtk=yes
PKG_CONFIG=no
fi
else
no_gtk=yes
fi
min_gtk_version=2.12.5
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GTK+ - version >= $min_gtk_version" >&5
$as_echo_n "checking for GTK+ - version >= $min_gtk_version... " >&6; }
if test x$PKG_CONFIG != xno ; then
## don't try to run the test against uninstalled libtool libs
if $PKG_CONFIG --uninstalled $pkg_config_args; then
echo "Will use uninstalled version of GTK+ found in PKG_CONFIG_PATH"
enable_gtktest=no
fi
echo "PKG_CONFIG: $PKG_CONFIG"
echo "min_gtk_version: $min_gtk_version"
echo "pkg_config_args: $pkg_config_args"
if $PKG_CONFIG --atleast-version $min_gtk_version $pkg_config_args; then
:
else
no_gtk=yes
fi
fi
no_gtk=""
if test x"$no_gtk" = x ; then
GTK_CFLAGS=`$PKG_CONFIG $pkg_config_args --cflags`
GTK_LIBS=`$PKG_CONFIG $pkg_config_args --libs`
gtk_config_major_version=`$PKG_CONFIG --modversion gtk+-2.0 | \
sed 's/\([0-9]*\).\([0-9]*\).\([0-9]*\)/\1/'`
gtk_config_minor_version=`$PKG_CONFIG --modversion gtk+-2.0 | \
sed 's/\([0-9]*\).\([0-9]*\).\([0-9]*\)/\2/'`
gtk_config_micro_version=`$PKG_CONFIG --modversion gtk+-2.0 | \
sed 's/\([0-9]*\).\([0-9]*\).\([0-9]*\)/\3/'`
if test "x$enable_gtktest" = "xyes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $GTK_CFLAGS"
LIBS="$GTK_LIBS $LIBS"
rm -f conf.gtktest
if test "$cross_compiling" = yes; then :
echo $ac_n "cross compiling; assumed OK... $ac_c"
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <gtk/gtk.h>
#include <stdio.h>
#include <stdlib.h>
int
main ()
{
int major, minor, micro;
char *tmp_version;
fclose (fopen ("conf.gtktest", "w"));
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = g_strdup("$min_gtk_version");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string\n", "$min_gtk_version");
exit(1);
}
if ((gtk_major_version != $gtk_config_major_version) ||
(gtk_minor_version != $gtk_config_minor_version) ||
(gtk_micro_version != $gtk_config_micro_version))
{
printf("\n*** 'pkg-config --modversion gtk+-2.0' returned %d.%d.%d, but GTK+ (%d.%d.%d)\n",
$gtk_config_major_version, $gtk_config_minor_version, $gtk_config_micro_version,
gtk_major_version, gtk_minor_version, gtk_micro_version);
printf ("*** was found! If pkg-config was correct, then it is best\n");
printf ("*** to remove the old version of GTK+. You may also be able to fix the error\n");
printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
printf("*** required on your system.\n");
printf("*** If pkg-config was wrong, set the environment variable PKG_CONFIG_PATH\n");
printf("*** to point to the correct configuration files\n");
}
else if ((gtk_major_version != GTK_MAJOR_VERSION) ||
(gtk_minor_version != GTK_MINOR_VERSION) ||
(gtk_micro_version != GTK_MICRO_VERSION))
{
printf("*** GTK+ header files (version %d.%d.%d) do not match\n",
GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION);
printf("*** library (version %d.%d.%d)\n",
gtk_major_version, gtk_minor_version, gtk_micro_version);
}
else
{
if ((gtk_major_version > major) ||
((gtk_major_version == major) && (gtk_minor_version > minor)) ||
((gtk_major_version == major) && (gtk_minor_version == minor) && (gtk_micro_version >= micro)))
{
return 0;
}
else
{
printf("\n*** An old version of GTK+ (%d.%d.%d) was found.\n",
gtk_major_version, gtk_minor_version, gtk_micro_version);
printf("*** You need a version of GTK+ newer than %d.%d.%d. The latest version of\n",
major, minor, micro);
printf("*** GTK+ is always available from ftp://ftp.gtk.org.\n";);
printf("***\n");
printf("*** If you have already installed a sufficiently new version, this error\n");
printf("*** probably means that the wrong copy of the pkg-config shell script is\n");
printf("*** being found. The easiest way to fix this is to remove the old version\n");
printf("*** of GTK+, but you can also set the PKG_CONFIG environment to point to the\n");
printf("*** correct copy of pkg-config. (In this case, you will have to\n");
printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
printf("*** so that the correct libraries are found at run-time))\n");
}
}
return 1;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
else
echo "no_gtk: $no_gtk"
echo "BOTO"
no_gtk=yes
echo "no_gtk: $no_gtk"
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
no_gtk=""
if test "x$no_gtk" = x ; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes (version $gtk_config_major_version.$gtk_config_minor_version.$gtk_config_micro_version)" >&5
$as_echo "yes (version $gtk_config_major_version.$gtk_config_minor_version.$gtk_config_micro_version)" >&6; }
:
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
if test "$PKG_CONFIG" = "no" ; then
echo "*** A new enough version of pkg-config was not found."
echo "*** See http://pkgconfig.sourceforge.net";
else
if test -f conf.gtktest ; then
:
else
echo "*** Could not run GTK+ test program, checking why..."
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $GTK_CFLAGS"
LIBS="$LIBS $GTK_LIBS"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <gtk/gtk.h>
#include <stdio.h>
int
main ()
{
return ((gtk_major_version) || (gtk_minor_version) || (gtk_micro_version));
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding GTK+ or finding the wrong"
echo "*** version of GTK+. If it is not finding GTK+, you'll need to set your"
echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
echo "*** to the installed location Also, make sure you have run ldconfig if that"
echo "*** is required on your system"
echo "***"
echo "*** If you have an old version installed, it is best to remove it, although"
echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
else
echo "*** The test program failed to compile or link. See the file config.log for the"
echo "*** exact error that occured. This usually means GTK+ is incorrectly installed."
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
GTK_CFLAGS=""
GTK_LIBS=""
as_fn_error $? "Test for GTK+ failed. See the file 'INSTALL' for help." "$LINENO" 5
fi
rm -f conf.gtktest
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if GTK+ is version 2.15.0 or newer" >&5
$as_echo_n "checking if GTK+ is version 2.15.0 or newer... " >&6; }
if $PKG_CONFIG --atleast-version=2.15.0 gtk+-2.0; then
have_gtk_2_15=yes
else
have_gtk_2_15=no
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_gtk_2_15" >&5
$as_echo "$have_gtk_2_15" >&6; }
